Via: Medium Newsletter

Naked mole rats, the Church of Perpetual Life, young blood transfusions. The quest to discover what the future holds for the human lifespan is a wild ride.

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Inside the Experiment That Could End Infertility

In the future, scientists may be able to make eggs and sperm from a sample of our skin. A lot has to happen before the procedure is ready for prime time.

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The Case for CRISPR Babies

Chinese researcher He Jiankui shocked the science community when he used CRISPR to edit two infants. He’s now facing possible criminal charges. Even so, some families with genetic diseases are finding hope in the controversy.

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Our Columns

The Nuance

This week’s column: Do different strains of marijuana cause different highs?

The takeaway: Cannabis
researchers say popular notions of
indica and sativa are “nonsense”

“One trend I predict for women’s
health care in 2019 is big companies
working to support working
mothers”

Read more for her full routine >

What Else We’re Reading

Why Rocking to Sleep Is a Matchless Sedative

Scientific American

This story makes a great case for a hammock nap. Two new studies suggest humans’ brains are evolutionarily programmed to respond to rocking, which is important for sleep and brain health.

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The Limits of Ancestry DNA Tests

Vox

Consumer genetics companies like 23andMe promise to reveal where people come from. But journalists recently discovered that twins can receive significantly different results. This explainer details how ancestry tests work, and their limitations.

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Number of the Week

— The number of steps one 66-year-old man completed in a single day. “How to Walk 100,000 Steps in One Day,” David Paul Kirkpatrick